数字主线 [
shù zì zhǔ xiàn]
digital main line
- 需要注明数字主线是否包含在表示总容量的定义中。
A note should indicate if the digital main lines included in the definition represents the total capacity. - 指连接到数字交换机的主线百分比。
Refers to the per cent of main lines connected to digital exchanges. - 这个百分比通过连接到数字电话交换机的主线数除以主线总数得到。
This percentage is obtained by dividing the number of main lines connected to digital telephone exchanges by the total number of main lines.
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